DQ 2 : Name two different methods for evaluating evidence.
Thirty-one words with a category question inside them. Pick a hierarchy and a checklist, not two checklists, or the comparison has nothing to compare.
Editorial process
Last reviewed · August 18, 2026
Two methods for evaluating evidence — and they are not the same kind of thing
The strongest version of this post chooses two methods that work at different levels, because that is what makes the compare-and-contrast half possible. A levels-of-evidence hierarchy — Melnyk's seven levels, or the older Level I to VII scheme — sorts studies by design before you read a word of the results: systematic reviews of randomised trials at the top, expert opinion at the bottom. It is fast, it is coarse, and it answers the question of what kind of study this is. A critical appraisal checklist — CASP, JBI, the Johns Hopkins tool — answers a different question: given that this is a cohort study, was it a good one? It asks about recruitment, confounding, follow-up, blinding, and whether the results can be applied to your population. Both are methods for evaluating evidence and they are not substitutes, which is precisely the contrast the prompt wants you to notice.
Compare them on what each is blind to, since that discriminates better than listing strengths. A hierarchy will place a badly conducted randomised trial above a meticulous cohort study, because it grades the design and not the execution. A checklist will tell you a case series was well reported and cannot tell you that a stronger design existed for the question. Used together they answer in sequence: the hierarchy sorts your search results so you know where to spend your reading time, and the checklist decides whether the studies you kept can carry your change proposal. Say that explicitly and say which you would apply first to your own capstone evidence, because the ordering is the practical judgement this course is trying to build and it is the sentence that shows you have used both rather than read about them. Choosing across levels rather than within one is the single decision that makes the second half of this post writable.
Likely learning objectives
- Distinguish design grading from execution appraisal as different evaluative acts.
- Describe what a levels-of-evidence hierarchy sorts and what it ignores.
- Describe what an appraisal checklist tests and what it cannot see.
- Sequence the two methods for a real evidence search.
Assignment instructions
Read the full question
Review every instruction before using the planning guidance that follows.
NRS 493 Topic 3 DQ 2 DQ 2 : Name two different methods for evaluating evidence. Assessment Description Name two different methods for evaluating evidence. Compare and contrast these two methods.
Turn the brief into deliverables
- 01Two named methods that operate at different levels.
- 02A description of what each one asks about a study.
- 03A contrast built on what each method is blind to.
- 04A statement of how they combine in sequence.
- 05An application to your own capstone evidence.
Each method described, then a comparison that discriminates
Method one: grading the design
Describe a levels-of-evidence hierarchy and what it sorts on.
What the assessor is likely looking for
The claim that ranking is by design, before results are read.
Method two: appraising the execution
Describe a named checklist and the questions it puts to a study.
What the assessor is likely looking for
Specific appraisal questions — confounding, follow-up, applicability.
What each is blind to
Contrast on failure modes rather than on strengths.
What the assessor is likely looking for
The badly conducted trial that a hierarchy still ranks highly.
Using them in sequence
Show the hierarchy sorting and the checklist deciding.
What the assessor is likely looking for
An order with a reason attached.
Applied to your capstone evidence
Run both over one study you are actually citing.
What the assessor is likely looking for
A verdict on a specific study rather than a description of the method.
The appraisal tools this prompt is pointing at
Recommended databases
- JBI
- Critical Appraisal Skills Programme
- PubMed Central
- Adelphi University Libraries
Search sequence
- 1.Download the appraisal checklist matching your study design before you read the study.
- 2.Read a levels-of-evidence summary and note that it grades design rather than conduct.
- 3.Apply both to a single paper from your capstone reference list.
- 4.Record where the two methods disagreed, since that disagreement is your contrast.
Reference shortlist
These are authoritative starting points, not a ready-made bibliography. A qualified reviewer must confirm that each source fits the assignment and supports the claim beside which it is cited.
JBI Critical Appraisal Tools
JBI (Joanna Briggs Institute), University of Adelaide · 2024
The JBI checklists, one per design — a concrete example of execution appraisal.
CASP Checklists
Critical Appraisal Skills Programme · 2024
The CASP checklists, an alternative appraisal instrument for the same job.
The hierarchy of evidence: levels and grades of recommendation
Indian Journal of Orthopaedics, via PubMed Central · 2010
The hierarchy of evidence and grades of recommendation, explained as a design sort.
Levels of Evidence — Evidence-Based Practice Research in Nursing
Adelphi University Libraries · 2024
A nursing-facing statement of the levels, useful for naming the scheme you used.
Critical Appraisal Toolkit (CAT) for assessing multiple types of evidence
Canada Communicable Disease Report · 2017
A critical appraisal toolkit covering multiple evidence types, for where the two methods meet.
Review before submission
Common mistakes
- Comparing two appraisal checklists, which produces no real contrast.
- Treating the hierarchy as a quality judgement rather than a design sort.
- Listing the levels without saying what the ranking is for.
- Never applying either method to the student's own evidence.
Submission checklist
- Do your two methods work at different levels?
- Have you said what each one cannot see?
- Is the sequence between them stated?
- Have you named a specific checklist rather than 'a checklist'?
- Does the post reach your own capstone evidence?
Use this guide to plan and review your own work. Follow your institution's rules and read Brinevia's academic-integrity policy.
Written by
Maren Caldwell
MSN, RN, CNE
Medical-surgical nursing, pharmacology and NCLEX preparation
Maren is a registered nurse with over 15 years of clinical and educational experience in medical-surgical nursing. She writes on NCLEX preparation, patient care fundamentals, pharmacology and evidence-based practice.
Reviewed by
Dr. Tessa Redmond
DNP, RN, CNE
Evidence-based practice and clinical education
Tessa is a doctorally-prepared nurse educator. She reviews Brinevia content for clinical accuracy and alignment with current evidence-based guidelines.